Single-player games like Abyssal Rust
Below are 9 single-player Steam games similar to Abyssal Rust, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Abyssal Rust page.
Ranked picks
- 1

Full Fathom
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
Full Fathom is an oceanic survival horror game. Pilot a deteriorating submarine as it drifts through grim waters, keeping it maintained as it is your only lifeline in the hostile, merciless ocean.
- 2

DepthWake
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
Return to an Earth abandoned for over 500 years and explore its transformed oceans in search of vital resources. With supplies on humanity's new home world running dry, you must gather materials, build automated underwater operations, and uncover the secrets that now lie beneath the waves.
- 3

Darkwater
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
Darkwater is a cooperative extraction horror game for 1-4 players. Command a submarine trapped under the ice of an alien planet. Battle enemy vessels and deep sea abominations as you hunt for resources. Do what it takes to survive.
- 4

Subnautica: Below Zero
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica.
- 5

The Trench
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
As captain of the Pandora sub, you must explore the Trench and retrieve data from the Neptune wreckage. But beware - the trench is home to unimaginable horrors that will test your courage. Can you survive the terrors of the deep and complete your mission, or will you become the next victim?
- 6

Subnautica
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
- 7

Barotrauma
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required.
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
- 8

KURSK
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required. Shares Adventure with Abyssal Rust.
KURSK is the first ever adventure and documentary video game inspired by real events. You assume the role of a spy who finds way on the Russian nuclear submarine K-141 Kursk. While trying to complete your mission, you become witness to the dramatic events which shook the world at that time.
- 9

Steel Chaos
Single-player alternative to Abyssal Rust — playable solo, no multiplayer required.
STEEL CHAOS is a fast-paced survival roguelite. Control a deadly flying mech, stack devastating upgrades, create insane synergies, and wipe entire enemy fleets from the sky.